http://www.royans.net/rant/2006/11/30/design-to-fail/ Failures are stepping stones to success.. Wed, 05 Aug 2009 08:20:54 -0800 http://wordpress.org/?v=2.9.2 hourly 1 http://www.royans.net/rant/2006/11/30/design-to-fail/comment-page-1/#comment-668 iJohn.org » What is scalability ? Wed, 24 Jun 2009 15:24:47 +0000 http://www.royans.net/rant/2006/11/30/design-to-fail/#comment-668 [...] 　　横向扩展，则不一定要相当数量的昂贵服务器。因为它可以通过普通的机器和存储硬件以达到规模效应来解决问题，像早期的Yahoo!，Google都是这样。横向扩展不仅仅是便宜，它是把应用程序构建在多个服务器组成的一个大server的基础上，这样就会随之有两个常见的问题： “Split brain“(功能，数据分割) 和 “hardware failure“(硬件故障，毕竟机器太多了)。 [...] [...] 　　横向扩展，则不一定要相当数量的昂贵服务器。因为它可以通过普通的机器和存储硬件以达到规模效应来解决问题，像早期的Yahoo!，Google都是这样。横向扩展不仅仅是便宜，它是把应用程序构建在多个服务器组成的一个大server的基础上，这样就会随之有两个常见的问题： “Split brain“(功能，数据分割) 和 “hardware failure“(硬件故障，毕竟机器太多了)。 [...]

]]> http://www.royans.net/rant/2006/11/30/design-to-fail/comment-page-1/#comment-616 Ultimate Scalability 1: What is Scalability « Distributed World Fri, 15 May 2009 23:33:02 +0000 http://www.royans.net/rant/2006/11/30/design-to-fail/#comment-616 [...] There is no silver bullet when it comes to solving problems for distributed system. Scalability is no difference. Royans suggests: If you need scalability urgently, vertical scalability or scaling up is the easiest choice. Unfortunately Vertical scaling, gets more and more expensive as you grow. On the other hand, horizontal scalability, or scaling out, doesn’t require you to buy more and more expensive servers. But it isn’t cheaper either. The application has to deal with problems such as “Split brain” and “hardware failure“. [...] [...] There is no silver bullet when it comes to solving problems for distributed system. Scalability is no difference. Royans suggests: If you need scalability urgently, vertical scalability or scaling up is the easiest choice. Unfortunately Vertical scaling, gets more and more expensive as you grow. On the other hand, horizontal scalability, or scaling out, doesn’t require you to buy more and more expensive servers. But it isn’t cheaper either. The application has to deal with problems such as “Split brain” and “hardware failure“. [...]

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